The Meaning of "cheese head"

How does the word sound?

History of this Word

"cheese" is from "chese", spoken by people in England during 1100-1550 A.D.
which is from "c?se", spoken by people in England during 450-1100 A.D.
which is from "kasjus", spoken by people of Germany
which is from "caseus", spoken by ancient people in central Italy around 700 B.C.

"head" is from "headfod", spoken by people in England during 450-1100 A.D.